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Gehan A. J. Amaratunga

Gehan A. J. Amaratunga

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Materials Science
UK
2022

D-Index & Metrics

Materials Science

D-Index
93
Citations
38205
World Ranking
1434
National Ranking
62

Gehan A. J. Amaratunga publication distribution in Materials Science in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Materials Science in 2026. The highlighted bar marks where Gehan A. J. Amaratunga sits on this spectrum.

50–69 publications: 28 scientists 70–89 publications: 152 scientists 90–109 publications: 356 scientists 110–129 publications: 487 scientists 130–149 publications: 723 scientists 150–169 publications: 835 scientists 170–189 publications: 850 scientists 190–209 publications: 891 scientists 210–229 publications: 862 scientists 230–249 publications: 766 scientists 250–269 publications: 726 scientists 270–289 publications: 665 scientists 290–309 publications: 593 scientists 310–329 publications: 537 scientists 330–349 publications: 477 scientists 350–369 publications: 440 scientists 370–389 publications: 356 scientists 390–409 publications: 321 scientists 410–429 publications: 256 scientists 430–449 publications: 246 scientists 450–469 publications: 216 scientists 470–489 publications: 212 scientists 490–509 publications: 174 scientists 510–529 publications: 194 scientists 530–549 publications: 162 scientists 550–569 publications: 131 scientists 570–589 publications: 111 scientists 590–609 publications: 103 scientists 610–629 publications: 99 scientists 630–649 publications: 77 scientists 650–669 publications: 92 scientists 670–689 publications: 56 scientists 690–709 publications: 53 scientists 710–729 publications: 53 scientists 730–749 publications: 38 scientists 750–769 publications: 52 scientists 770–789 publications: 43 scientists 790–809 publications: 38 scientists 810–829 publications: 34 scientists 830–849 publications: 25 scientists 850–869 publications: 18 scientists 870–889 publications: 20 scientists 890–909 publications: 24 scientists 910–929 publications: 27 scientists 930–949 publications: 20 scientists 950–969 publications: 17 scientists 970–989 publications: 10 scientists 990–1,009 publications: 16 scientists 1,010–1,029 publications: 13 scientists 1,030–1,049 publications: 12 scientists 1,050–1,069 publications: 9 scientists 1,070–1,089 publications: 8 scientists 1,090–1,109 publications: 7 scientists 1,110–1,129 publications: 9 scientists 1,130–1,149 publications: 2 scientists 1,150–1,162 publications: 5 scientists 1,163+ publications: 100 scientists
50 publications 1,163+

This scientist: 615 publications — 93rd percentile

93% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,163 publications or more.

Gehan A. J. Amaratunga D-index placement in Materials Science in 2026

The chart shows the D-index (discipline H-index) distribution of Materials Science scientists ranked by Research.com in 2026. The highlighted bar marks where Gehan A. J. Amaratunga sits on this spectrum.

40–41 D-Index: 211 scientists 42–43 D-Index: 450 scientists 44–45 D-Index: 612 scientists 46–47 D-Index: 612 scientists 48–49 D-Index: 598 scientists 50–51 D-Index: 657 scientists 52–53 D-Index: 667 scientists 54–55 D-Index: 621 scientists 56–57 D-Index: 597 scientists 58–59 D-Index: 610 scientists 60–61 D-Index: 587 scientists 62–63 D-Index: 606 scientists 64–65 D-Index: 533 scientists 66–67 D-Index: 490 scientists 68–69 D-Index: 469 scientists 70–71 D-Index: 378 scientists 72–73 D-Index: 421 scientists 74–75 D-Index: 359 scientists 76–77 D-Index: 323 scientists 78–79 D-Index: 299 scientists 80–81 D-Index: 230 scientists 82–83 D-Index: 210 scientists 84–85 D-Index: 195 scientists 86–87 D-Index: 203 scientists 88–89 D-Index: 175 scientists 90–91 D-Index: 175 scientists 92–93 D-Index: 142 scientists 94–95 D-Index: 121 scientists 96–97 D-Index: 117 scientists 98–99 D-Index: 107 scientists 100–101 D-Index: 88 scientists 102–103 D-Index: 85 scientists 104–105 D-Index: 68 scientists 106–107 D-Index: 62 scientists 108–109 D-Index: 57 scientists 110–111 D-Index: 45 scientists 112–113 D-Index: 49 scientists 114–115 D-Index: 50 scientists 116–117 D-Index: 34 scientists 118–119 D-Index: 38 scientists 120–121 D-Index: 37 scientists 122–123 D-Index: 29 scientists 124–125 D-Index: 28 scientists 126–127 D-Index: 24 scientists 128–129 D-Index: 33 scientists 130–131 D-Index: 28 scientists 132–133 D-Index: 21 scientists 134–135 D-Index: 20 scientists 136–137 D-Index: 23 scientists 138–139 D-Index: 17 scientists 140–141 D-Index: 12 scientists 142–143 D-Index: 17 scientists 144–145 D-Index: 21 scientists 146–147 D-Index: 13 scientists 148–149 D-Index: 11 scientists 150–151 D-Index: 14 scientists 152–153 D-Index: 13 scientists 154–155 D-Index: 9 scientists 156–157 D-Index: 10 scientists 158–159 D-Index: 7 scientists 160–161 D-Index: 4 scientists 162–163 D-Index: 4 scientists 164 D-Index: 3 scientists 165+ D-Index: 98 scientists
40 D-Index 165+

This scientist: 93 D-Index — 89th percentile

89% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 165 D-Index or more.

Research.com Recognitions

  • 2022 - Research.com Materials Science in United Kingdom Leader Award
  • 2004 - Fellow of the Royal Academy of Engineering (UK)

Overview

What is he best known for?

The fields of study he is best known for:

  • Quantum mechanics
  • Semiconductor
  • Electron

His main research concerns Carbon nanotube, Nanotechnology, Amorphous carbon, Optoelectronics and Analytical chemistry. His Carbon nanotube study incorporates themes from Plasma-enhanced chemical vapor deposition and Field electron emission. As a member of one scientific family, Gehan A. J. Amaratunga mostly works in the field of Nanotechnology, focusing on Electrode and, on occasion, Nanoelectronics.

His research in Amorphous carbon intersects with topics in Carbon film, Thin film, Spectroscopy, Amorphous solid and Band gap. His Optoelectronics study frequently intersects with other fields, such as Ohmic contact. The Analytical chemistry study combines topics in areas such as Absorption, Space charge, Electrical resistivity and conductivity, Carbon and Emission spectrum.

His most cited work include:

  • Superhydrophobic Carbon Nanotube Forests (1325 citations)
  • Growth process conditions of vertically aligned carbon nanotubes using plasma enhanced chemical vapor deposition (920 citations)
  • Single-wall carbon nanotube/conjugated polymer photovoltaic devices (736 citations)

What are the main themes of his work throughout his whole career to date?

Optoelectronics, Nanotechnology, Carbon nanotube, Electrical engineering and Analytical chemistry are his primary areas of study. As part of his studies on Optoelectronics, Gehan A. J. Amaratunga often connects relevant areas like Diamond. His Nanotechnology research is multidisciplinary, incorporating elements of Chemical engineering and Electrode.

His Carbon nanotube study integrates concerns from other disciplines, such as Field electron emission and Chemical vapor deposition. His Field electron emission research includes themes of Cathode and Current density. His studies in Analytical chemistry integrate themes in fields like Thin film and Amorphous carbon.

He most often published in these fields:

  • Optoelectronics (35.32%)
  • Nanotechnology (19.76%)
  • Carbon nanotube (19.49%)

What were the highlights of his more recent work (between 2015-2021)?

  • Chemical engineering (8.93%)
  • Electric power system (3.11%)
  • Mathematical optimization (2.17%)

In recent papers he was focusing on the following fields of study:

Gehan A. J. Amaratunga spends much of his time researching Chemical engineering, Electric power system, Mathematical optimization, Control theory and Optoelectronics. His Chemical engineering study also includes fields such as

  • Oxide, which have a strong connection to Thermogravimetric analysis,
  • Photocatalysis which intersects with area such as Scanning electron microscope. His biological study deals with issues like Power, which deal with fields such as Wind power and Turbine.

His biological study spans a wide range of topics, including Differential evolution, Crest factor, Voltage, Photovoltaic system and Renewable energy. His work deals with themes such as Layer and Carbon nanotube, which intersect with Optoelectronics. His Supercapacitor study combines topics from a wide range of disciplines, such as Carbon, Nanotechnology and Energy storage.

Between 2015 and 2021, his most popular works were:

  • Empirical Mode Decomposition based ensemble deep learning for load demand time series forecasting (190 citations)
  • Random vector functional link network for short-term electricity load demand forecasting (146 citations)
  • Urea-Hydroxyapatite Nanohybrids for Slow Release of Nitrogen (118 citations)

In his most recent research, the most cited papers focused on:

  • Quantum mechanics
  • Semiconductor
  • Electrical engineering

His scientific interests lie mostly in Mathematical optimization, Nanoparticle, Chemical engineering, Electric power system and Differential evolution. Gehan A. J. Amaratunga has researched Mathematical optimization in several fields, including Power, AC power and Energy market. His Nanoparticle research includes elements of Phosphorus, Drug delivery, Cubic zirconia, Composite number and Solubility.

Gehan A. J. Amaratunga interconnects Photocatalysis, Calcination, Electrospinning and Scanning electron microscope in the investigation of issues within Chemical engineering. His Differential evolution research incorporates elements of Voltage, Control theory and Search algorithm. His Carbon nanotube study introduces a deeper knowledge of Nanotechnology.

Best Publications

  • Superhydrophobic Carbon Nanotube Forests

    Kenneth K. S. Lau;José Bico;Kenneth B. K. Teo;Manish Chhowalla

  • Growth process conditions of vertically aligned carbon nanotubes using plasma enhanced chemical vapor deposition

    M. Chhowalla;K. B. K. Teo;C. Ducati;N. L. Rupesinghe

  • Full-colour quantum dot displays fabricated by transfer printing

    Tae Ho Kim;Kyung Sang Cho;Eun Kyung Lee;Sang Jin Lee

  • Flexible Electronics: The Next Ubiquitous Platform

    A. Nathan;A. Ahnood;M. T. Cole;Sungsik Lee

  • Thin films of fullerene-like MoS2 nanoparticles with ultra-low friction and wear

    Manish Chhowalla;Gehan A. J. Amaratunga

  • Properties of filtered-ion-beam-deposited diamondlike carbon as a function of ion energy

    P. J. Fallon;V. S. Veerasamy;C. A. Davis;J. Robertson

  • Single-wall carbon nanotube/conjugated polymer photovoltaic devices

    E. Kymakis;G. A. J. Amaratunga

  • Low-threshold cold cathodes made of nitrogen-doped chemical-vapour-deposited diamond

    Ken Okano;Satoshi Koizumi;S. Ravi P. Silva;Gehan A. J. Amaratunga

  • Synthesis of carbon 'onions' in water

    N. Sano;H. Wang;M. Chhowalla;I. Alexandrou

  • Nitrogen containing hydrogenated amorphous carbon for thin-film field emission cathodes

    Gehan A. J. Amaratunga;S. R. P. Silva

  • Urea-Hydroxyapatite Nanohybrids for Slow Release of Nitrogen

    Nilwala Kottegoda;Nilwala Kottegoda;Chanaka Sandaruwan;Gayan Priyadarshana;Asitha Siriwardhana

  • Properties of carbon onions produced by an arc discharge in water

    N. Sano;H. Wang;I. Alexandrou;Manishkumar Chhowalla

  • Carbon nanotubes as field emission sources

    W. I. Milne;K. B. K. Teo;G. A. J. Amaratunga;P. Legagneux

  • High open-circuit voltage photovoltaic devices from carbon-nanotube-polymer composites

    E. Kymakis;I. Alexandrou;G. A. J. Amaratunga

  • Silicon surface tunnel transistor

    William M. Reddick;Gehan A. J. Amaratunga

  • Uniform patterned growth of carbon nanotubes without surface carbon

    K. B. K. Teo;M. Chhowalla;G. A. J. Amaratunga;W. I. Milne

  • Microwave devices: carbon nanotubes as cold cathodes.

    Kenneth B. K. Teo;Eric Minoux;Ludovic Hudanski;Franck Peauger

  • Influence of ion energy and substrate temperature on the optical and electronic properties of tetrahedral amorphous carbon (ta-C) films

    M. Chhowalla;J. Robertson;C. W. Chen;S. R. P. Silva

  • Single-walled carbon nanotube–polymer composites: electrical, optical and structural investigation

    E Kymakis;I Alexandou;G.A.J Amaratunga

  • Nitrogen modification of hydrogenated amorphous carbon films

    S. R. P. Silva;J. Robertson;G. A. J. Amaratunga;B. Rafferty

Frequent Co-Authors

Florin Udrea
Florin Udrea University of Cambridge
William I. Milne
William I. Milne University of Cambridge
Manish Chhowalla
Manish Chhowalla University of Cambridge
Haider Butt
Haider Butt Khalifa University
Kenneth B. K. Teo
Kenneth B. K. Teo Aixtron (United Kingdom)
Husnu Emrah Unalan
Husnu Emrah Unalan Middle East Technical University
Timothy D. Wilkinson
Timothy D. Wilkinson University of Cambridge
John Robertson
John Robertson University of Cambridge
David R. McKenzie
David R. McKenzie University of Sydney

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